These open discussion seem like a good way for a quick tounge to get in a lot of trouble fast.

SPC,

Even in an open forum format such as here on RP, a junior SM knows or should know that even though not face to face that there is still the expected professionalism and respect that comes and goes with each rank and addressee in these forums. And yes, SMs could be subject to repercussions if they cross over that line at the perception (key word) of the senior participant or if addressed to someone of senior rank related to it, even though this is not a DOD or military controlled site, al members of the military are responsible and held accountable to their actions on social media as defined by military rules and regulations.

With that being said if the proper protocols and pre-requisites have been fulfilled and the person participating on the site has been vetted and is who they say they are then then can be held accountable for their actions (words) from forum discussions. 

The issue that concerns me here as the current status is that we do have individuals on RP that mask their identities and speak quite openly and sometimes derogatorily towards other members that clearly outrank them, whether or not something can be done would be on whether or not the admin of the site revealed the personal data on that person if requested from a military COC for use of action is where a sticky situation could occur.